🥗 Kidney Diet Food

Science-Based Diet - Protecting Kidney Health

Proper Diet - The Key to Protecting Kidney Function

Chronic kidney disease affects approximately 674 million people worldwide (GBD 2021). Scientific research has proven that an appropriate diet can slow disease progression, reduce complications, and significantly improve quality of life.

Scientifically Proven Benefits

🛡️ Protect Kidney Function

An appropriately protein-restricted diet helps reduce the burden on the kidneys, slowing the decline of kidney function in chronic kidney disease patients.

MDRD Study and Cochrane Review 2020
According to KDOQI 2020, restricting protein to 0.55-0.8g/kg/day (depending on condition) helps slow kidney disease progression. Cochrane Review 2020 confirmed that very low protein diets combined with ketoanalogs significantly reduce the risk of progression to end-stage kidney disease.

💊 Reduce Cardiovascular Complications

Controlling sodium, potassium, and phosphorus in the diet helps reduce the risk of hypertension, cardiac arrhythmia, and vascular calcification.

KDOQI 2020 & KDIGO 2024
KDOQI 2020 recommends limiting sodium to < 2.3g/day to reduce blood pressure and improve volume control. Electrolyte management helps reduce the risk of cardiovascular events in CKD patients.

⚖️ Electrolyte Balance

Adjusting potassium, phosphorus, and calcium intake helps maintain electrolyte balance and prevent dangerous complications.

Kidney International 2017
A diet controlling potassium (2-3g/day) and phosphorus (800-1000mg/day) reduces the risk of hyperkalemia and renal osteodystrophy by 50%.

🔬 Reduce Uremic Toxins

Adjusting protein intake appropriately helps reduce urea production and toxic waste accumulation in the blood when kidney function declines.

Garneata et al. JASN 2016
A very low protein diet (0.3g/kg) combined with ketoanalogs significantly reduced blood urea and improved metabolic disorders in CKD stage 4-5 patients.

🍽️ Improve Quality of Life

A science-based diet helps reduce fatigue, nausea, itching, and other uncomfortable symptoms, improving daily well-being and mental health.

American Journal of Kidney Diseases 2019
Patients who adhered to a renal diet had 35% higher quality of life scores and a 60% reduced risk of hospitalization due to complications.

⏰ Delay Dialysis

Adhering to a proper diet helps extend the time kidneys remain functional, delaying the need for dialysis or kidney transplant.

Clinical Journal of ASN 2020
A low protein diet extended the time before dialysis was needed by an average of 2-3 years in CKD stage 4-5 patients.

⚠️ Important Notice

Each patient has a different kidney condition. The diet should be personalized based on disease stage, blood test results, and overall health status. Please consult your doctor and a dietitian before making any dietary changes.

1.15
ml/min/1.73m²/year

Reduced rate of GFR decline

(MDRD Study)

5-10 mmHg

Blood pressure reduction with sodium restriction

(KDOQI 2020)

84%

Reduced risk of needing dialysis (VLPD)

(Garneata 2016)

~11 months

Dialysis delay with VLPD

(Garneata 2016)

Key Principles of the Kidney Diet

1. Protein Control

According to KDOQI 2020: Non-diabetic CKD stage 3-5 patients not on dialysis should limit protein to 0.55-0.6g/kg/day; with diabetes: 0.6-0.8g/kg/day. Prioritize high-quality protein. Dialysis patients need 1.0-1.2g/kg/day to maintain nutrition.

2. Sodium (Salt) Restriction

According to KDOQI 2020: Limit to < 2.3g sodium/day (< 100 mmol, equivalent to < 6g table salt). Helps control blood pressure, reduce edema, and decrease proteinuria when combined with medication. This is a critical factor in protecting kidney function.

3. Potassium Adjustment

Potassium should be controlled at 2-3g/day depending on blood test results. Avoid potassium-rich foods such as bananas, potatoes, and tomatoes when blood potassium is high. Hyperkalemia is a dangerous complication that can cause cardiac arrhythmia.

4. Phosphorus Restriction

Limit to 800-1000mg/day. High phosphorus causes bone loss and vascular calcification. Avoid processed foods, soft drinks, milk, and dairy products. KDOQI research recommends phosphorus control starting from CKD stage 3.

5. Adequate Calories and Micronutrients

Maintain adequate energy intake of 30-35 kcal/kg/day to prevent malnutrition. Supplement B vitamins, vitamin D, and iron as prescribed by your doctor. Malnutrition increases the risk of mortality 2-3 times in kidney patients.

Scientific References

[1] Ikizler TA, et al. (2020). "KDOQI Clinical Practice Guideline for Nutrition in CKD: 2020 Update." American Journal of Kidney Diseases, 76(3 Suppl 1): S1-S107. PubMed | AJKD
[2] KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney International, 2024. PubMed | Kidney Int | KDIGO
[3] Hahn D, et al. (2020). "Low protein diets for non-diabetic adults with chronic kidney disease." Cochrane Database of Systematic Reviews, 10: CD001892. PubMed | Cochrane
[4] Garneata L, et al. (2016). "Ketoanalogue-Supplemented Vegetarian Very Low-Protein Diet and CKD Progression." Journal of the American Society of Nephrology, 27(7): 2164-2176. PubMed | PMC
[5] GBD Chronic Kidney Disease Collaboration. (2024). "Global, regional, and national burden of chronic kidney disease, 1990-2021." Global Burden of Disease Study 2021. PubMed | PMC
[6] Levey AS, et al. (1999). "Dietary protein restriction and the progression of chronic renal disease: what have all of the results of the MDRD study shown?" J Am Soc Nephrol, 10(11): 2426-2439. PubMed | JASN
[7] ESPEN (2021). "Guideline on clinical nutrition in hospitalized patients with acute or chronic kidney disease." Clinical Nutrition, 40(4): 1644-1668. PubMed | Clinical Nutrition
[8] Kalantar-Zadeh K, et al. (2003). "Malnutrition-inflammation complex syndrome in dialysis patients: causes and consequences." American Journal of Kidney Diseases, 42(5): 864-881. PubMed | AJKD
[9] Kelly JT, et al. (2017). "Healthy Dietary Patterns and Risk of Mortality and ESRD in CKD: A Meta-Analysis of Cohort Studies." Clinical Journal of the American Society of Nephrology, 12(2): 272-279. PubMed | CJASN | PMC